Mineral Nutrition Question 11

11. Which one of the following is not an essential mineral element for plants while the remaining three are?

(a) Iron

(b) Manganese

(c) Cadmium

(d) Phosphorus

Show Answer

Answer : c

Hints & Solution

(c) Cadmium is not an essential element for plants. Phosphorus is a macronutrient and iron and manganese are micronutrients for plants. Among all the heavy metals, cadmium is considered to be the one that is most toxic for plants. Hence, cadmium concentrations in the plants can be measured by the effects it has on plant growth. It inhibits the photosynthetic rate and production of chlorophyll and its activity.



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